Cyclopedia of Biblical, Theological and Ecclesiastical Literature
(Heb. Tsalmonah, צִלְמֹנָה ; shady; Sept. Σελμωνᾶ; Vulg. Salmona), the name of a desert station (the 45th) of the Israelites, which they reached between leaving Mount Hor and camping at Punon, although they must have turned the southern, point of Edomitish territory by the way (Numbers 33:41). It therefore lay on the south-east side of Edom, but hardly so far north as Maan, a few miles east of Petra, as Ranumer thinks. More probably Zalmonah may be in the Wady el-Amunn, which runs into the Wady Ithm, close ton where Elath anciently stood. (See EXODE).
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McClintock, John. Strong, James. Entry for 'Zalmonah'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/encyclopedias/eng/tce/z/zalmonah.html. Harper & Brothers. New York. 1870.